Noun
(Australia, slang) The drinking of an alcoholic beverage out of a shoe, especially as a celebratory act.
(military, slang, dated) A shoesmith.
Source: en.wiktionary.org"I don't seem to win boring races," he grinned from the podium, before chugging the champagne from his racing boot in a trademark 'shoey'. Source: Internet
The champagne-in-shoe celebration is called a “shoey,” and Ricciardo introduced it to the F1 circuit last year. Source: Internet